Year annual % growth 1961 6.587157588288321 1962 -0.35001215910538974 1963 6.657034518591615 1964 18.551709134044955 1965 23.768211880971762 1966 11.351342765669997 1967 13.927482773800364 1968 23.589173992150748 1969 8.508669360816555 1970 9.334378828318819 1971 1.2571780865059168 1972 33.92818357403257 1973 4.256373155098942 1974 50.75399120794944 1975 35.18922803967746 1976 29.76746260432651 1977 1.8576998013956967 1978 -18.853707062278446 1979 -33.47125428123451 1980 15.193313548758326 1981 -13.41245353520749 1982 -6.8634221376968725 1983 30.312231139878406 1984 -23.38167581835225 1985 -9.749040706974526 1986 -3.823307698213341 1987 -0.8969701054383705 1988 -35.07236148668791 1989 20.254023578570894 1990 24.06096428406373 1991 30.381398696582778 1992 -7.412955090849962 1993 -27.32653671480051 1994 -30.6495433341548 1995 28.78608087673365 1996 28.378249413248483 1997 -2.835345061171978 1998 1.321542163982599 1999 3.725662322862817 2000 4.361777796377808 2001 14.769257070175286 2002 18.33611027099022 2003 18.0187256450576 2004 5.472552988856933 2005 -3.4188262185543152 2006 4.997313920597946 2007 12.996355128882868 2008 9.673382884071557 2009 3.1532065634476396 2010 9.705329764412696 2011 -4.326679083897972 2012 -7.102462258779568 2013 -9.040550193370933 2014 4.025270460252344 2015 -38.966690818665825 2016 32.81608578935439 2017 6.657109726218664 2018 -4.686038936209471 2019 -8.284694285929106 2020 19.891878894943304 2021 3.3302250478916164 2022 1.2263032454203255 2023 3.3281171018152804